Padlock



s. wlLocH.

PAD'LocK, APPLICATION FlLvED'FEB. 2, 1922.

Patented@ Aug. 1, w22.

Syvum/Hoz y, atroz mug STEFAN WILOCH, OF SCHENECTADY, NEW YORK.

rAnLocK.

Specification of Letters Patent.

Patented Aug. 1, 1922.

Application med February 2, 1922. serial No. 533,637.

T 0 all 107mm` t may concern.'

Be it known that I, STEFAN VVrLocH, a citizen of the United States of America, residing at Schenectady, in the county of Schenectady and State of New York, have invented certain new and usefulvlmprovements in Padlocks, of which the following is a specification.

This invention relates to'certain new and useful improvements in padlocks, and vhas particular reference to a padlock embodying a barrel portion and a shackle bolt detachably connected to the barrel portion, with a special type of key for releasing the shackle bolt.

The primary object of the invention resides in the provision of a padlock having an internally threaded barrel portion with a screw plug` threaded therein and operable by a special type of key for shifting the plug to engaging and disengaging positions with respect to a shackle bolt.

A further object of the invention embodies in a padlock of the type above set forth, a peculiar engagement between the key and screw plug which only renders the lock operable by the employment of a particular kev.

still further object of the invention is to provide a padlock of the above type, wherein a lshackle bolt is to'be entirely disengaged from a barrel memberand with the employment of a special type of key to affeet lsuch disengagement, the lkey opening in the barrel being of a configuration, only to permit the entrance of the key into the barrel by a portion of the key engaging a movable member' carried by the shackle bolt with a subsequent engagement between the vkey and the screw vplug contained in the barrel for-'retaining the shackle` bolt the barrel. y f

With the above and other objects in view which lwill appear as thedescription proceedS, my invention resides in the novel construction, combination, adaptation'and arrangement of parts hereinafter described and claimed.

In the drawings forming a part of this application, and in which likereference char,- acters f designate corresponding parts throughout the several views,

Figure l isa longitudinal sectional view of a padlock constructed in accordance with locked to .the present invention, showing the internally threaded barrel, the screw plug therein 2 of the barrel.

engaging the shackle bolt and the spring pressed movable member of the shackle bolt engaging the key to prevent entrance of the key into the barrel of the lock,

Figure 2 is an end elevational view of the lock showing the key receiving opening in the end of the lock barrel,

'Figure 3 is a side' elevational view of the lock, partly broken away and shown in section with the operating key moved to an engaging position with a movable member carried bythe shackle bolt to permit the entry of the key into the barrel of the lock,

Figure 4L is a side elevational View, partly broken away and shown in section, with the key engaging the screw plug inthe barrel of the lock with the screw plug shifted to a disengaging position relativey to the shackle bolt,

Figure 5 .is a side elevational view of the shackle bolt disengaged from the barrel of the lock showing the spring pressed plunger parried thereby for cooperation with the (ey,

Figurev 6 is an end elevational view of the shackle bolt showing the opening in one arm thereof for receiving the pin carried by the screw plug and the tensioned plunger for cooperation with the key, and

Figure 7 is an end eleva-tional'view of the key employedv for operating the lock.

yReferring more in detail to the accompanying drawing, it being understood that the pref-erred form of the invention is herein illustrated, there is shown a padlock embodying a barrel portion l having' an open end closed by a plug 2 suitably anchoredtherein.

type best illustrated in Figure 2. The inner wall of the barrel l is provided with screw threads 5 of comparatively deep 'pitch and kextending substantially from `end to end thereof.

A screw plug 6 of the type best illustrated in Figure l, is threaded for engagement with the threads 5 of the barrel l the outer end ofthe plug 6 being of substantially conical form as illustrated at 7, and carry ing a pin 8 forengagement with a shackle bolt, later. to be described, with the free end of the pin 8 received in the socket 9 formed in the inner face of the closure plug The inner end of the screw plug 6. carries an axial projection or eX- rel of the lock is of Ueformation, embody# ing relatively long and short side legs 13 and' 111 respectively, connectedy hy an arm 155 openings 16 being provide-d in the'side wallfofr the barrel 1 for the receptionof the Ifree ends of the side'leg'sof the shackle bolt.

As shown in Figures 1 and 4, the leg 13 of the" shackle bolt that enters theh'arr'el 1, is provided with a transverse opening 17 for the reception' of the pin 8 carried by the screw plug 6', the engagement thereof being shown in" Eigurel 1l with the shackle bolt locked tothe barrel. l

The legs 14 'of the sliackleldolt and the screw plug operating keyllfS are Constructed for cooperation toj permit entry of the key ierintoftheopening e' off the` end wall ofl the barrel, lthe inner end" ofthe leg! 121 being providedw'itlia socket for the reception of a plunger 19'sp'r'i`n'g pressed as at 2Q'norinally to be pressed outwardly of the shackle-holt leg with the projecting end of the )Vilnnger 19 carrying a finger extension 21. j The con'- struction of the key 18 is Lindre clearly shown in Figure 4.-V of' the drawing, the shank thereof carrying a finger gripping head 22, while the opposite'e'nd ofthe key shankiS providediwith an axial socket 23 with the outer' end of the socket being of polygonal formation. The shank 'of thekey, adjacent the socket 24 is provided with a longitudinally extending outer end thereof.`

7 ins; 'fi in the and wane er asien; barrel is' internal slot`v25 communicating with the socketf23gwliile'the en d of the key shank adjacent the slot vcarries an extension 26, with an outwardly directed lug 27 uponthe .rr-em the abmfe'- detenta description of thev device, itis believed that the construction and operation thereof will 'at'A once be apparent, it being"v noted that the key openprovided with a sideslot'fia to provide a clearance for the key extension' 26 and lug 27- when the'key 18 is inserted intofthe key opening' asshown in Figure 1. When the key is/'so inserted, it' will 'be noted from an rinspection of Figure 1 of the draw-ing that tlierinner end of theikey shank engages' the plunger' finger 21, preventing furtheren'- tra/lice of the key intothe loek'barr'el; The keyi opening 4', and theshank ofthe key, are of Such dimensions' est@ rei-'ma ne@ r0- tationl of the key in said-opening, and upon rotation thereof the lug 27 upon the key extension26 willhe moved into engagement with the lower end of the spring pressed pliingerflQ, ata point interm'ediately'of the 'nager estensenl '21, itfheingfnoted that 'the lower ends ofthe plunger and finger are curved to provide a riding surface for the key extension and lug with the plunger 19 subseopiently moved `into the leg 14 of the sliac'kle bolt `to displace the plunger 19 from the Asliding path of movement ofthe key v18 'during the correct positioning ther'ef" in in theinner end of the key, the polygonal base/portion 10 of the screw plug extension being receivedinthe polygonalvsocket of the outer end ofthe key socket 23, andwith the pin 'upon the stud 11 received' inthe side slot 25 ofthe key. Upon rotating the key 18 in-y the properl direction, the 'screw bolt 6-'is axially shift'edbyits threaded 'connection withthe lock barrelrl to remove thepin Scarried by the screw'bolt from engagement with the opening 17 s in; the legg'13 o-f the shackle bolt, the parts being shifted tothe position shown in Figure l1 aty which time they shackle bolt i's freely removable from thebarrel as will be readily ,understood; To remove the key from the lock; the same is shifted to a disengaging position with respect tol` thescrew` bolt 6 and upon rotationf thereof the extension 26 andthe lug 27 is disposed for registration withthe side slot la 'of the key opening 4' whereupon the key is `removed from the lock casing. l

As above stated, the preferred embodiment ofthe invention is hereinillustrated, f i

but it* is' tov be understood that vvar-ions changes are'contemplated such as modifying the construction of the extension' carried'loy the' screw bolt; 6 and embodying' the base entering the lockvbarrel, and ke'yl operated meanswithin the 'barrel-adapted to 'be'moved into engage' "ent Withvone of the leg's for anchoring the shackle bolt to the barrel, and cooperating" means' carried by the" otherleg of the shackle bolt andthe operatingliey` adapted for cooperationl prior to' engagement of thekey with the operatngfmeansfor releasingthe other leg'` ofthe shackle' bolt".l

2. In a padlock of the type described, ja barrel, said' barrelbeinginternally threaded andhavinga key opening 'formedinioneend thereof, a screw bolt threaded/'into the-ban.

rel, a shackle bolt having side' legs received opening formed in-` one" of 'Said legs, fa pin ina side wallof the Barrel with a transverse;

Carne-d' by' the Ser-ew beit adapted wref es-' i cejxfedinthe opening-'in theishackle holt leg, and a key for axially shifting the screw bolt to move the pin carried thereby into and out of engagement with the shackle bolt leg.

3. In a padlock of the type described, a barrel, said barrel being internally threaded and having a key opening formed in one end thereof, a screw bolt threaded into the bar rel, a shackle bolt having side legs received in a side wall of the barrel with a transverse opening formed in one of said legs, a pin carried by the screw bolt adapted to be received within the opening in the shackle bolt legs, and a key for actually shifting the screw bolt to move the pin carried thereby into and out of engagement with the shackle bolt leg, a tensioned plunger projecting from theinner end of the other shackle bolt leg and traversing the key opening in the end wall of the barrel, and means carried by said key adapted to be moved into engagement with the plunger for shifting the same laterally of the key opening to permit entrance of the key into the barrel.

l. In a padlock of the type described, a barrel, said barrel being internally threaded and having a key opening formed in one end thereof, a screw bolt threaded into the barrel, a shackle bolt having side legs received in a side wall of the barrel with a transverse opening yformed in one of said legs, a pin carried by the screw bolt adapted to be received within the opening in the shackle bolt legs, and a key for actually shifting the screw bolt to move the pin carried thereby into and out of engagement with the shackle bolt leg, a tensioned plunger projecting from the inner end of the other shackle bolt leg and traversing the key opening in the end wall of the barrel, means carried by said key adapted to be moved into engagement with the plunger for shift-ing the same in the key opening to permit entrance of the key into the barrel, a projection carried by the inner end of the screw bolt embodying a polygonal base portion and a cylindrical stud, and an axial socket in the inner end of the key hav# ing a polygonal portion at the outer end thereof for cooperation with the screw bolt extension to effect rotation of the screw bolt upon rotation of the key. l

5'. In a padlock of the type described, a barrel having a key opening in oneA end thereof, a shackle bolt detachably connected to said barrel, key operated means within the barrel for retaining the shackle bolt in locked position with respect thereto, a key for operating said shackle bolt retaining means, and cooperating means carried by the key and shackle bolt adapted for operation prior to engagement between the key and the shackle bolt retaining means.

In testimony whereof I aHiX my signature.

STEFAN WIL'OCH. 

